Here's my post in the "23.M.7 not being documented" thread. Fun fact -- this batch size giveaway passed the MEC by a 9-8 vote, which is why C81 went through, and is going through, a recall election.

A5S

There is a sweet spot that gives the company cost savings, yet still results in earlier coverage ladder sequence for commuters without resorting to the chaotic IA process or the nuclear 23.M.7. ... not to mention the annoying ARCOS call-outs, which is a significant reason we negotiated batch size limits in the first place. Maybe that sweet spot is 15, or 20, or 25? Who knows. We may never know now.

What's frustrating is that DALPA didn't even try to negotiate a happy medium between the previously negotiated batch sizes and the current Unlimited. We just tossed the Miata keys to the company and said, "Here enjoy the $$ millions in cost savings. Please keep your promises, and report back to us how well you are keeping your promises."